FreeCalypso > hg > freecalypso-tools
annotate target-utils/libcommon/cmd_r32.c @ 497:74610c4f10f7
target-utils: added 10 ms delay at the end of abb_power_off()
The deosmification of the ABB access code (replacement of osmo_delay_ms()
bogus delays with correctly-timed ones, which are significantly shorter)
had one annoying side effect: when executing the poweroff command from
any of the programs, one last '=' prompt character was being sent (and
received by the x86 host) as the Calypso board powers off. With delays
being shorter now, the abb_power_off() function was returning and the
standalone program's main loop was printing its prompt before the Iota chip
fully executed the switch-off sequence!
I thought about inserting an endless tight loop at the end of the
abb_power_off() function, but the implemented solution of a 10 ms delay
is a little nicer IMO because if the DEVOFF operation doesn't happen for
some reason in a manual hacking scenario, there won't be an artificial
blocker in the form of a tight loop keeping us from further poking around.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 25 May 2019 20:44:05 +0000 |
parents | e7502631a0f9 |
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1 /* |
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2 * r32 hexaddr -- read a 32-bit register or memory location |
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3 */ |
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4 |
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5 #include <sys/types.h> |
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6 #include "types.h" |
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7 |
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8 void |
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9 cmd_r32(argbulk) |
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10 char *argbulk; |
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11 { |
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12 char *argv[2]; |
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13 u_long addr; |
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14 |
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15 if (parse_args(argbulk, 1, 1, argv, 0) < 0) |
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16 return; |
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17 if (parse_hexarg(argv[0], 8, &addr) < 0) { |
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18 printf("ERROR: argument must be a valid 32-bit hex address\n"); |
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19 return; |
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20 } |
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21 if (addr & 3) { |
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22 printf("ERROR: unaligned address\n"); |
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23 return; |
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24 } |
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25 printf("%08X\n", *(volatile u32 *)addr); |
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26 } |